package com.atzon.fliter;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebFilter({"/view/*","/user/*","/art/*","/meet/*"})
public class LoginFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest req = (HttpServletRequest) servletRequest;
        HttpServletResponse resp = (HttpServletResponse) servletResponse;
        Object obj = req.getSession().getAttribute("userId");
        if (null != obj) {
            filterChain.doFilter(req, resp);
        } else {
            resp.sendRedirect(req.getContextPath() + "/");
        }
    }

    @Override
    public void destroy() {

    }
}